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W3wp.exe process for the MSExchangeSyncAppPool application pool crashes in an Exchange Server 2010 SP2 or SP3 environment

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Symptoms

Assume that Exchange ActiveSync is enabled in a Microsoft Exchange Server 2010 Service Pack 2 (SP2) or Service Pack 3 (SP3) environment. Additionally, assume that ActiveSync devices use an AirSync protocol that is earlier than version 140. In this situation, the W3wp.exe process for the MSExchangeSyncAppPool application pool crashes.

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Cause

This issue occurs because ActiveSync devices that use earlier versions of AirSync protocols generate invalid requests. This causes an unhandled exception. Then, the MSExchangeSyncAppPool application pool crashes.

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Resolution

To resolve this issue, install the following update rollup:
2866475 Description of Update Rollup 2 for Exchange Server 2010 SP3

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Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

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Keywords: kbqfe, kbfix, kbsurveynew, kbexpertiseinter, kb

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Article Info
Article ID : 2861118
Revision : 1
Created on : 1/7/2017
Published on : 8/13/2013
Exists online : False
Views : 349